June 1817. Sir Dominic De Lacy - one of the season’s most eligible gentlemen - has recently proposed marriage. . . to a woman he scarcely knows. But his father's choice for him Miss Maria Nightingale seems amiable and at 29 Dominic cannot live the life of a bachelor forever. He hopes he can provide a happy future for her as they learn to care for each other. Maria however has other ideas. Midway through their engagement celebrations she confesses to Dominic that she is not Maria at all but her identical twin sister Margaret. Maria has disappeared and Margaret's been persuaded to take her place until she's found - and for that she needs Dominic's help. The pair quickly find they make a formidable team but with just three weeks to avoid the biggest scandal of the season time is against them. But even if they find Maria can they really hope the wedding will happen? Because as they are starting to realise chemistry can't be arranged - and Sir Dominic might just be engaged to the wrong Miss Nightingale. . .
